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Finding the Fourth Proportional to 86,442.57, 119,337.81 and 59,728.89

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Solution

The fourth proportional to 86,442.57, 119,337.81 and 59,728.89 is: 82,458.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,442.57 : 119,337.81 = 59,728.89 : x
  2. Step 2: Convert to fraction form
    86,442.57/119,337.81 = 59,728.89/x
  3. Step 3: Cross multiply
    86,442.57x = 119,337.81 × 59,728.89
  4. Step 4: Simplify right side
    86,442.57x = 7,127,914,926.33
  5. Step 5: Solve for x
    x = 7,127,914,926.33/86,442.57
  6. Step 6: Final answer
    x = 82,458.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.